[sysprof] desktop: add GTK to categories

[Christian Hergert <chergert src gnome org>]

commit df71ef27d9d31cc698406dc7923f0fb4d1d837d8
Author: Christian Hergert <chergert redhat com>
Date:   Sun Jan 28 19:40:47 2018 -0800

    desktop: add GTK to categories
    
    To quiet the desktop-file-validate program.

 data/org.gnome.Sysprof2.desktop.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/org.gnome.Sysprof2.desktop.in b/data/org.gnome.Sysprof2.desktop.in
index b8d13f1..2f8aa29 100644
--- a/data/org.gnome.Sysprof2.desktop.in
+++ b/data/org.gnome.Sysprof2.desktop.in
@@ -10,5 +10,5 @@ Icon=sysprof
 StartupNotify=true
 Terminal=false
 Type=Application
-Categories=GNOME;Development;
+Categories=GNOME;GTK;Development;
 MimeType=application/x-sysprof-capture;